Fix github action broken node version specification

Author: sebastienbarbier

.github/workflows/build.yaml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.12.0]
+        node-version: [16.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
     steps:
     - uses: actions/checkout@v2